As a 10-Kg Object Moves from Point a to Point B, It

Multiple Choice

As a 1.0-kg object moves from point A to point B, it is acted upon by a single conservative force which does −40 J of work during this motion. At point A the speed of the particle is 6.0 m/s and the potential energy associated with the force is +50 J. What is the potential energy at point B?

A) +72 J
B) +10 J
C) +90 J
D) +28 J
E) +68 J